Genetic sources and loci for wheat head blast resistance identified by genome-wide association analysis

The emergence and spread of wheat blast caused by fungal pathogen Magnaporthe oryzae pathotype Triticum is a threat to global wheat production. The resistance level and genetic loci for blast resistance in Chinese germplasm remain unknown. A panel of 266 bread wheat accessions from China, CIMMYT-Mex...

Full description

Bibliographic Details
Main Authors: Lei Wu, Xinyao He, Muhammad Rezaul Kabir, Krishna K. Roy, Md. Babul Anwar, Felix Marza, Yi He, Peng Jiang, Xu Zhang, Pawan K. Singh
Format: Article
Language:English
Published: KeAi Communications Co., Ltd. 2022-06-01
Series:Crop Journal
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S2214514121001641
_version_ 1828823902312202240
author Lei Wu
Xinyao He
Muhammad Rezaul Kabir
Krishna K. Roy
Md. Babul Anwar
Felix Marza
Yi He
Peng Jiang
Xu Zhang
Pawan K. Singh
author_facet Lei Wu
Xinyao He
Muhammad Rezaul Kabir
Krishna K. Roy
Md. Babul Anwar
Felix Marza
Yi He
Peng Jiang
Xu Zhang
Pawan K. Singh
author_sort Lei Wu
collection DOAJ
description The emergence and spread of wheat blast caused by fungal pathogen Magnaporthe oryzae pathotype Triticum is a threat to global wheat production. The resistance level and genetic loci for blast resistance in Chinese germplasm remain unknown. A panel of 266 bread wheat accessions from China, CIMMYT-Mexico and other countries was screened for head blast resistance under 12 field experiments in Bolivia and Bangladesh. Subsequently, a genome-wide association study was performed to understand the genetic basis of wheat blast resistance. The average blast index of all the accessions was 53.7% ± 12.7%, and 10 accessions including Chinese accessions Yumai 10 and Yu 02321 showed moderate to high levels of blast resistance, accounting for only 3.8% in the panel. Fifty-eight significant SNPs clustered in a 28.9 Mb interval on the 2AS/2NS translocation region, explaining phenotypic variation between 10.0% and 35.0%. The frequency of the 2AS/2NS translocation in the Chinese accessions was as low as 4.5%. These results indicated that the 2NS fragment was the only major locus conferring resistance to wheat blast in this panel, and the resistant and moderately resistant lines identified could be deployed in breeding.
first_indexed 2024-12-12T13:44:42Z
format Article
id doaj.art-a63d4c05eccb4475a2f8819daab75d8f
institution Directory Open Access Journal
issn 2214-5141
language English
last_indexed 2024-12-12T13:44:42Z
publishDate 2022-06-01
publisher KeAi Communications Co., Ltd.
record_format Article
series Crop Journal
spelling doaj.art-a63d4c05eccb4475a2f8819daab75d8f2022-12-22T00:22:42ZengKeAi Communications Co., Ltd.Crop Journal2214-51412022-06-01103793801Genetic sources and loci for wheat head blast resistance identified by genome-wide association analysisLei Wu0Xinyao He1Muhammad Rezaul Kabir2Krishna K. Roy3Md. Babul Anwar4Felix Marza5Yi He6Peng Jiang7Xu Zhang8Pawan K. Singh9CIMMYT-JAAS Joint Center for Wheat Diseases, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, Jiangsu, ChinaInternational Maize and Wheat Improvement Center (CIMMYT), Apdo, Postal 6-641, 06600 Mexico D.F., MexicoBangladesh Wheat and Maize Research Institute (BWMRI), Nashipur, Dinajpur 5200, BangladeshBangladesh Wheat and Maize Research Institute (BWMRI), Nashipur, Dinajpur 5200, BangladeshBangladesh Wheat and Maize Research Institute (BWMRI), Nashipur, Dinajpur 5200, BangladeshInstituto Nacional de Innovación Agropecuaria y Forestal (INIAF), La Paz, BoliviaCIMMYT-JAAS Joint Center for Wheat Diseases, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, Jiangsu, ChinaCIMMYT-JAAS Joint Center for Wheat Diseases, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, Jiangsu, ChinaCIMMYT-JAAS Joint Center for Wheat Diseases, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, Jiangsu, China; Corresponding authors.International Maize and Wheat Improvement Center (CIMMYT), Apdo, Postal 6-641, 06600 Mexico D.F., Mexico; Corresponding authors.The emergence and spread of wheat blast caused by fungal pathogen Magnaporthe oryzae pathotype Triticum is a threat to global wheat production. The resistance level and genetic loci for blast resistance in Chinese germplasm remain unknown. A panel of 266 bread wheat accessions from China, CIMMYT-Mexico and other countries was screened for head blast resistance under 12 field experiments in Bolivia and Bangladesh. Subsequently, a genome-wide association study was performed to understand the genetic basis of wheat blast resistance. The average blast index of all the accessions was 53.7% ± 12.7%, and 10 accessions including Chinese accessions Yumai 10 and Yu 02321 showed moderate to high levels of blast resistance, accounting for only 3.8% in the panel. Fifty-eight significant SNPs clustered in a 28.9 Mb interval on the 2AS/2NS translocation region, explaining phenotypic variation between 10.0% and 35.0%. The frequency of the 2AS/2NS translocation in the Chinese accessions was as low as 4.5%. These results indicated that the 2NS fragment was the only major locus conferring resistance to wheat blast in this panel, and the resistant and moderately resistant lines identified could be deployed in breeding.http://www.sciencedirect.com/science/article/pii/S2214514121001641Magnaporthe oryzae pathotype TriticumHost resistanceWheat blastGWAS
spellingShingle Lei Wu
Xinyao He
Muhammad Rezaul Kabir
Krishna K. Roy
Md. Babul Anwar
Felix Marza
Yi He
Peng Jiang
Xu Zhang
Pawan K. Singh
Genetic sources and loci for wheat head blast resistance identified by genome-wide association analysis
Crop Journal
Magnaporthe oryzae pathotype Triticum
Host resistance
Wheat blast
GWAS
title Genetic sources and loci for wheat head blast resistance identified by genome-wide association analysis
title_full Genetic sources and loci for wheat head blast resistance identified by genome-wide association analysis
title_fullStr Genetic sources and loci for wheat head blast resistance identified by genome-wide association analysis
title_full_unstemmed Genetic sources and loci for wheat head blast resistance identified by genome-wide association analysis
title_short Genetic sources and loci for wheat head blast resistance identified by genome-wide association analysis
title_sort genetic sources and loci for wheat head blast resistance identified by genome wide association analysis
topic Magnaporthe oryzae pathotype Triticum
Host resistance
Wheat blast
GWAS
url http://www.sciencedirect.com/science/article/pii/S2214514121001641
work_keys_str_mv AT leiwu geneticsourcesandlociforwheatheadblastresistanceidentifiedbygenomewideassociationanalysis
AT xinyaohe geneticsourcesandlociforwheatheadblastresistanceidentifiedbygenomewideassociationanalysis
AT muhammadrezaulkabir geneticsourcesandlociforwheatheadblastresistanceidentifiedbygenomewideassociationanalysis
AT krishnakroy geneticsourcesandlociforwheatheadblastresistanceidentifiedbygenomewideassociationanalysis
AT mdbabulanwar geneticsourcesandlociforwheatheadblastresistanceidentifiedbygenomewideassociationanalysis
AT felixmarza geneticsourcesandlociforwheatheadblastresistanceidentifiedbygenomewideassociationanalysis
AT yihe geneticsourcesandlociforwheatheadblastresistanceidentifiedbygenomewideassociationanalysis
AT pengjiang geneticsourcesandlociforwheatheadblastresistanceidentifiedbygenomewideassociationanalysis
AT xuzhang geneticsourcesandlociforwheatheadblastresistanceidentifiedbygenomewideassociationanalysis
AT pawanksingh geneticsourcesandlociforwheatheadblastresistanceidentifiedbygenomewideassociationanalysis